Download Excel file via AJAX MVC

Question

I have a large(ish) form in MVC.

I need to be able to generate an excel file containing data from a subset of that form.

The tricky bit is that this shouldn

Answer 1

  $.ajax({
    global: false,
    url: SitePath + "/User/ExportTeamMembersInExcel",
    "data": { 'UserName': UserName, 'RoleId': RoleId, UserIds: AppraseeId },
    "type": "POST",
    "dataType": "JSON",
   "success": function (result) {
        debugger
        var bytes = new Uint8Array(result.FileContents);
        var blob = new Blob([bytes], { type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" });
        var link = document.createElement('a');
        link.href = window.URL.createObjectURL(blob);
        link.download = "myFileName.xlsx";
        link.click();
      },
    "error": function () {
        alert("error");
    }
})


[HttpPost]
    public JsonResult ExportTeamMembersInExcel(string UserName, long? RoleId, string[] UserIds)
    {
        MemoryStream stream = new MemoryStream();
        FileContentResult robj;
        DataTable data = objuserservice.ExportTeamToExcel(UserName, RoleId, UserIds);
        using (XLWorkbook wb = new XLWorkbook())
        {
            wb.Worksheets.Add(data, "TeamMembers");
            using (stream)
            {
                wb.SaveAs(stream);
            }
        }
        robj = File(stream.ToArray(), System.Net.Mime.MediaTypeNames.Application.Octet, "TeamMembers.xlsx");
        return Json(robj, JsonRequestBehavior.AllowGet);
    }